Specification Brand : gernie BulletPoint : For Canon EF 70-300mm f/4-5.6 IS II Lens BulletPoint1 : Adjustable Aperture Easily Adjust From 4: 60mm to meet various light transmission needs. BulletPoint2 : Optical Customization Function: The aperture can adjust its beam diameter as needed, allowing users to adjust the beam size according to the actual situation. It is suitable for various optical experiments and optoelectronic equipment. BulletPoint3 : Versatile Compatibility Easily installable, this diaphragm lens adapts to a wide range of optical instruments and cameras, ensuring versatility in usage. BulletPoint4 : Easy to install, adapt to a variety of optical instruments, cameras, etc. BulletPoint5 : Stable Performance Exquisitely processed and manufactured for reliable and stable performance in various applications. Color : Black CompatibleMountings : Canon FD ExternallyAssignedProductIdentifier : 7732258985855 ExternallyAssignedProductIdentifier1 : 0085126930097 ExternallyAssignedProductIdentifier2 : 085126930097 FocalLengthDescription : 49 mm ItemName : gernie Lens Diaphragm Reduce Enlarge Adjustable Diaphragm Aperture Module Lenses, gernie86wbfg7v30 ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters adapters-&-converters Manufacturer : gernie MaxAperture : 4 f_stop MaxFocalLength : 300 millimeters MaximumFormatSize : Full Frame MinFocalLength : 70 millimeters ModelName : gernie86wbfg7v30 ModelNumber : gernie86wbfg7v30 MountingType : Canon EF PartNumber : gernie86wbfg7v30 ProductDescription : 1. 4-60mm adjustable aperture to meet different light transmission requirements.2. Easy to install, adapt to a variety of optical instruments, cameras, etc.3. With 18 blades, it is easy to adjust and make the diaphragm work more stable.4. Selected high‑quality aluminum alloy materials, strong and durable to use.5. Exquisite processing and manufacturing, stable and reliable performance.Specification:Item Type: Lens DiaphragmMaterial: Aluminum AlloyModel: SK60Uses: Optical InstrumentsBasic Parameters:Inner Hole Size: Approx. 4-60mm / 0.2-2.4inOuter Circle Size: Approx. 82mm / 3.2inThickness Size: Approx. 8mm / 0.3inNumber of Blades: 18packing list:1 x Lens DiaphragmNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. ProductSiteLaunchDate : 2024-05-21T19:58:17.528Z Size : 58mm SupplierDeclaredDgHzRegulation : not_applicable